If you don't have a wallet, we generate a wallet on Venly for you, then, when you're ready to take ownership yourself, you can simply take your private key and transfer it to your own one. The benefit of using the wallet we created for you is for users that aren’t too familiar with crypto wallets like MetaMask, but in the future can transfer to a wallet you’re comfortable with. We're using Polygon chain, Venly are the custodial wallet providers.